Population ecologists follow the fate of same-age cohorts to

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#Question id: 20276

#Unit 7. System Physiology – Animal

Central diabetes insipidus is caused by failure of the posterior pituitary to secrete ADH and the following statements pertain to that disorder:

A. excretion of large volumes of dilute urine

B. the urine cannot be concentrated

C. produces large volumes of dilute urine

D. increased serum osmolarity

E. circulating levels of ADH are high

Which of the following is the correct combination of the statements given above?

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#Question id: 3819

#Unit 3. Fundamental Processes

DNA replication is studied in a newly discovered bacterium. It takes 30 min for the bacterium to complete a round of replication at 37oC. A Meselson-Stahl-type experiment was performed. The bacteria were grown for several generations in 14N-medium and then switched to 15N-medium. The DNA molecules were then analyzed.

After one generation in 15N-medium, the DNA is denatured and analyzed in a CsCl gradient. If the single-stranded DNA forms two bands, one with heavy density and one with light density, what conclusion could be drawn about the mechanism of DNA replication in this bacterium?

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#Question id: 13176

#Unit 10. Ecological Principles

Coral reefs can be found on the southern east coast of the United States but not at similar latitudes on the southern west coast. Differences in which of the following most likely account for this?

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#Question id: 21814

#Unit 12. Applied Biology

A biosensor used for the detection of S-nitrosothiols have immobilized glutathione peroxidase enzyme containing selenocysteine residue that catalytically produces 

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#Question id: 2928

#Unit 2. Cellular Organization

Which of the following S. pombe mutants is(are) larger than normal?